J-Blade 

A penis that hooks, resembling a "J"

Dr. Powderly's small dick is a j-blade

J-Blade by Anonymous March 29, 2003

J-Blader 

A nickname used for someone with a first name beginning with the letter J. Some may make a joke that the person stabs and/or talks about stabbing a lot.

D-Dog: J-Blader pass me that knife. Byut don't stab me.

Josh: Dude i told you not to call me J-Blader.

J-Blader by Mnayin May 1, 2009